| 1601 | NDLQ | NADLER, MAYNARD | | | SCAC3 |
| 1602 | NDLQ | NEW DIMENSION LOGISTICS LLC | | | SCAC4 |
| 1603 | NDLR | NDL XPRESS | | | SCAC4 |
| 1604 | NDLS | NATIONAL DISTRIBUTORS LEASING INC | | | SCAC4 |
| 1605 | NDLU | P & O NEDLLOYD BV | | | SCAC4 |
| 1606 | NDLV | NOBLITT DELIVERY SERVICE XPRESS | | | SCAC3 |
| 1607 | NDLV | NONSTOPDELIVERY INC | | | SCAC4 |
| 1608 | NDLY | NEDLLOYD LIJEN B.V. | | | PWRC |
| 1609 | NDM | Nadym Airlines | Callsign: Nadym, | RUS | AVCODES |
| 1610 | NDM | Ferrocarriles Nacionales de Mexico | 1/1994-7/2000; eliminated 1/2002; 7/2005 | | NAKINA |
| 1611 | NDM | Ferrocarriles Nacionales de Mexico (National Rys. of Mexico) (cars actually marked NdeM) | 1/1980 | | NAKINA |
| 1612 | NDM | Ferrocarriles Nacionales de Mexico (National Rys. of Mexico) | 1/1975 | | NAKINA |
| 1613 | NDM | Ferrocarriles Nacionales de Mexico (National Rys. of Mexico) | Jan-75 | | NRHS |
| 1614 | NDM | Ferrocarriles Nacionales de Mexico (National Rys. of Mexico) (cars actually marked NdeM) | Jan-80 | | NRHS |
| 1615 | NDM | Ferrocarriles Nacionales de Mexico | 1/94-7/2000 | | NRHS |
| 1616 | NDM | FERROCARRILES NACIONALES DE MEXICO | | | PWRC |
| 1617 | NDM | Ferrocarriles Nacionales de México | | | RSRV |
| 1618 | NDM | NATIONAL RAILWAYS OF MEXICO (FERROC | | | SCAC4 |
| 1619 | NDMF | NORTHLAND DISTRIBUTING & MFG INC | | | SCAC4 |
| 1620 | NDMG | NUANCE DESIGN MARBRE ET GRANIT INC | | | SCAC4 |
| 1621 | NDMP | NICOLE, D M TRANSPORTATION | | | SCAC3 |
| 1622 | NDMR | NEEDMORE TRANSPORT INC | | | SCAC3 |
| 1623 | NDMS | NEW DORP MOVING & STORAGE | | | SCAC3 |
| 1624 | NDMT | NDM TRANSPORTS | | | SCAC4 |
| 1625 | NDMZ | NATIONAL RAILWAYS OF MEXICO (FERROCARRILES NACIONALES DE MEXICO; NATIONAL DOMINION OF MEXICO) | | | PWRC |
| 1626 | NDMZ | Ferrocarriles Nacionales de México | | | RSRV |
| 1627 | NDN | Aerolineas Andinas | Callsign: Andinas, | YV | AVCODES |
| 1628 | NDNQ | NORDAN TRANSPORTATION COMPANY | | | SCAC3 |
| 1629 | NDOD | NETWORK DISTRIBUTION OF DALLAS INC | | | SCAC3 |
| 1630 | NDOD | NETWORK DISTRIBUTION OF DALLAS INC | | | SCAC4 |
| 1631 | NDOE | N D O EXPEDITE INC | | | SCAC4 |
| 1632 | NDPU | FRIGO LEASING | | | SCAC3 |
| 1633 | NDR | Andesmar Lineas Aereas, S.A. | Callsign: Andesmar, | RA | AVCODES |
| 1634 | NDR | Nordair Ltd. | IATA: ND, Callsign: Nordair, | CDN | AVCODES |
| 1635 | NDRC | NEDRAC INC | | | SCAC3 |
| 1636 | NDRC | NEDRAC INC | | | SCAC4 |
| 1637 | NDRF | NATIONAL DISASTER RELIEF | | | SCAC4 |
| 1638 | NDRI | NEW DIREX INC | | | SCAC4 |
| 1639 | NDRR | NATIONAL DUTCH RAILROAD | | | SCAC3 |
| 1640 | NDRR | NATIONAL DUTCH RAILROAD | | | SCAC4 |
| 1641 | NDRS | NODDING, DAVID R S | | | SCAC4 |
| 1642 | NDRX | National Despatch Refrigerator Line | 7/1937-1/1950 | | NAKINA |
| 1643 | NDRX | National Despatch Refrigerator Line (Chicago, New York & Boston Refrigerator Co.) | 7/1935 | | NAKINA |
| 1644 | NDRX | National Despatch Refrigerator Line (Chicago, New York & Boston Refrigerator Line) | Apr-38 | | NRHS |
| 1645 | NDRX | *NATIONAL DEFENSE RAILROAD CORPORATION | | | PWRC |
| 1646 | NDRX | *NATIONAL DESPATCH REFRIGERATOR LINE | | | PWRC |
| 1647 | NDS | Nordstress (Australia) Pty Ltd. | | AUS | AVCODES |
| 1648 | NDS | Normandie Air Services | | F | AVCODES |
| 1649 | NDS | Nordstree (Australia) | | | ICAO1 |
| 1650 | NDSC | N DUMBADZE SHIPPING COMPANY LTD | | | SCAC3 |
| 1651 | NDSD | NEVER DELAY SERVICE LTD | | | SCAC4 |
| 1652 | NDSH | NATIONAL DRAYAGE SERVICES LLC (CHS) | | | SCAC4 |
| 1653 | NDSI | NDS INC | | | SCAC3 |
| 1654 | NDSM | NORTH DAKOTA STATE MILL INDUSTRY | | | PWRC |
| 1655 | NDSN | NATIONAL DELIVERY SYSTEMS INC | | | SCAC4 |
| 1656 | NDSR | N D S TRANSPORTATION SERVICE | | | SCAC4 |
| 1657 | NDSS | NATIONAL DISTRIBUTION SERVICES INC | | | SCAC4 |
| 1658 | NDST | N D S TRANSPORT LTD | | | SCAC4 |
| 1659 | NDSU | HAPAG LLOYD A.G | | D | BIC |
| 1660 | NDSU | NILE DUTCH AFRICA LINE | | | SCAC4 |
| 1661 | NDSV | N D SERVICES | | | SCAC3 |
| 1662 | NDSV | NATIONAL DRAYAGE SERVICES LLC | | | SCAC4 |
| 1663 | NDT | ND Aerotaxis, S.A. de C.V. | Callsign: ND Aerotaxis, | MEX | AVCODES |
| 1664 | NDT | Ferrocarril Nacional de Tehuantepec (Tehuantepec National) | 1/1975-1/1980 | | NAKINA |
| 1665 | NDT | Ferrocarril Nacional de Tehuantepec (Tehuantepec National) | 1/75-1/80 | | NRHS |
| 1666 | NDT | FERROCARRILL NACIONAL DE TEHUANTEPEC | | | PWRC |
| 1667 | NDT | Ferrocarril Nacional de Tehuantepec | | | RSRV |
| 1668 | NDTA | NELSON, DALE TRUCKING | | | SCAC4 |
| 1669 | NDTB | NEW DISTRIBUTING CO INC | | | SCAC4 |
| 1670 | NDTC | N & D TRANSPORTATION CO INC | | | SCAC3 |
| 1671 | NDTC | N & D TRANSPORTATION CO INC | | | SCAC4 |
| 1672 | NDTE | NACIONAL DE TRANSPORTES PASADO SA D | | | SCAC4 |
| 1673 | NDTG | NEWMAN, DARRELL TRUCKING LLC | | | SCAC4 |
| 1674 | NDTI | N D T INC | | | SCAC3 |
| 1675 | NDTK | NATIONWIDE TRUCKING | | | SCAC3 |
| 1676 | NDTK | NORDIC TANKERS A/S | | | SCAC4 |
| 1677 | NDTL | NORDIC INDUSTRIES INC | | | SCAC3 |
| 1678 | NDTL | NADEAUS TOTAL LOGISTIC CONTROL | | | SCAC4 |
| 1679 | NDTM | NORTH DELTA TRANSPORT LIMITED | | | SCAC4 |
| 1680 | NDTN | NORMAN, DAVID TRUCKING INC | | | SCAC4 |
| 1681 | NDTQ | NORTH DENVER TRANSFER AND STORAGE | | | SCAC3 |
| 1682 | NDTR | NEW DIRECTION TRANSPORT INC | | | SCAC4 |
| 1683 | NDTS | NORTH DAYTON TRUCK SERVICE INC | | | SCAC3 |
| 1684 | NDTW | NATIONAL DISTRIBUTION TRANSPORT & W | | | SCAC3 |
| 1685 | NDU | University of North Dakota | Callsign: Sioux, | USA | AVCODES |
| 1686 | NDU | University of North Dakota | | | ICAO1 |
| 1687 | NDUL | NOBLE DRILLING (US) LLC | | | SCAC4 |
| 1688 | NDUO | NOTRE DAME USED OIL AND FILTER | | | SCAC4 |
| 1689 | NDVC | NORTHLAND SERVICES, INC | | | SCAC3 |
| 1690 | NDVC | NORTHLAND SERVICES INC | | | SCAC4 |
| 1691 | NDVS | NELSONS DELIVERY SERVICE | | | SCAC4 |
| 1692 | NDWL | NEDEWILL & CO S A | | | SCAC4 |
| 1693 | NDWS | NELSON, D W & SONS | | | SCAC3 |
| 1694 | NDWS | NESBETT, D W & SONS | | | SCAC4 |
| 1695 | NDX | Bac Aviation | Callsign: Nordex, | S | AVCODES |
| 1696 | NDX | Nitrogen Division, Allied Chemical Corp. | added 7/1958; 4/1961; eliminated 10/1964 | | NAKINA |
| 1697 | NDX | Nitrogen Division, Allied Chemical & Dye Corp. | 7/1954-10/1957; eliminated 7/1958 | | NAKINA |
| 1698 | NDX | Chicago, New York & Boston Refrigerator Co. | 7/1935 | | NAKINA |
| 1699 | NDX | Nitrogen Division, Allied Chemical & Dye Corp. | 10/57; eliminated 7/58 | | NRHS |
| 1700 | NDX | Nitrogen Division, Allied Chemical Corp. | added 7/58; 4/61 | | NRHS |
